Hybrid system and vehicle

Abstract

A hybrid system and a vehicle, the hybrid system comprising an engine, an electric motor, a dual clutch, and a transmission provided with two synchromesh mechanisms and two input shafts. The engine being selectively in transmission connection to one of the input shafts via one clutch unit of the dual clutch and being selectively in transmission connection to the other of the input shafts via the other clutch unit of the dual clutch.

The invention claimed is: 
     
       1. A hybrid system, comprising:
 a transmission including a first input shaft, a second input shaft, an output shaft, and an intermediate shaft, wherein the second input shaft sleeves the first input shaft, and the second input shaft and the first input shaft are capable of rotating independently of each other, wherein the first input shaft is provided with a first synchromesh mechanism, and the output shaft is provided with a second synchromesh mechanism, wherein a first input shaft first gear, which is arranged on the first input shaft in a non-torque-resistant manner and corresponds to the first synchromesh mechanism, is always in a meshing state with an intermediate shaft first gear, which is arranged on the intermediate shaft in a torque-resistant manner, wherein a first input shaft second gear, which is arranged on the first input shaft in a non-torque-resistant manner and corresponds to the first synchromesh mechanism, is always in a meshing state with an output shaft first gear, which is arranged on the output shaft in a torque-resistant manner, wherein an output shaft second gear and an output shaft third gear, which are arranged on the output shaft in a non-torque-resistant manner and correspond to the second synchromesh mechanism, are always in a meshing state, respectively, with a second input shaft first gear and a second input shaft second gear, which are arranged on the second input shaft in a torque-resistant manner, wherein the intermediate shaft is also provided with an intermediate shaft second gear in a torque-resistant manner, and the intermediate shaft second gear is always in a meshing state with the second input shaft second gear; 
 an electric motor, wherein the electric motor is always in transmission connection with the second input shaft; and 
 an engine and a dual clutch, wherein the dual clutch comprises a first clutch unit and a second clutch unit, the engine being selectively in transmission connection with the first input shaft via the first clutch unit and being selectively in transmission connection with the second input shaft via the second clutch unit. 
 
     
     
       2. The hybrid system according to  claim 1 , wherein the dual clutch is arranged on a radial inner side of a rotor of the electric motor. 
     
     
       3. The hybrid system according to  claim 1 , wherein one of:
 a rotor of the electric motor is directly connected with the second input shaft in a coaxial manner; and 
 the electric motor is always in transmission connection with the second input shaft via one of the second input shaft first gear and the second input shaft second gear. 
 
     
     
       4. The hybrid system according to  claim 3 , wherein one of:
 the rotor of the electric motor is directly connected with the intermediate shaft in a coaxial manner; and 
 the electric motor is always in transmission connection with the second input shaft via one of a first gear pair consisting of the output shaft second gear and the second input shaft first gear, a second gear pair consisting of the output shaft third gear and the second input shaft second gear, and a third gear pairing consisting of an additional intermediate gear and the second input shaft first gear. 
 
     
     
       5. The hybrid system according to  claim 1 , wherein the hybrid system is operable in one of a pure electric motor driving mode, a pure engine driving mode, and a hybrid driving mode, wherein:
 in the pure electric motor driving mode, the engine is in a non-operating state, the electric motor is in an operating state, the first clutch unit and the second clutch unit are both disengaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the electric motor transmits torque to the transmission for driving; 
 in the pure engine driving mode, the engine is in an operating state, the electric motor is in a non-operating state, one of the first clutch unit and the second clutch unit is engaged, and at least one of a) the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and b) the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the engine transmits torque to the transmission for driving; and 
 in the hybrid driving mode, the engine and the electric motor are both in an operating state, one of the first clutch unit and the second clutch unit is engaged, at least one of a) the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and b) the second synchromesh mechanism is engaged with one of a gear corresponding to the output shaft second gear and the output shaft third gear, such that the engine and the electric motor transmit torque to the transmission for driving. 
 
     
     
       6. The hybrid system according to  claim 5 , wherein, when the hybrid system is in the pure engine driving mode, one of:
 the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with the first input shaft first gear, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear; 
 the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with the first input shaft second gear, and the second synchromesh mechanism is in a neutral state; and 
 the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear. 
 
     
     
       7. The hybrid system according to  claim 5 , wherein, when the hybrid system is in the hybrid driving mode, one of:
 the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and the second synchromesh mechanism is engaged with one of the output shaft second gear or the output shaft third gear; and 
 the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear. 
 
     
     
       8. The hybrid system according to  claim 5 , wherein the hybrid system is operable in an idle charge mode, in which the engine and the electric motor are both in an operating state, the first clutch unit is disengaged and the second clutch unit is engaged, both the first synchromesh mechanism and the second synchromesh mechanism are in a neutral state, such that the engine transmits torque to the electric motor to enable the electric motor to charge a battery. 
     
     
       9. The hybrid system according to  claim 5 , wherein the hybrid system is operable in a mode of starting the engine while driving in which the electric motor is in an operating state, the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the electric motor transmits torque to the transmission while transmitting torque to the engine for starting the engine. 
     
     
       10. A vehicle, comprising the hybrid system according to  claim 1 . 
     
     
       11. A hybrid system, comprising:
 a transmission including:
 a first input shaft; 
 a first synchromesh mechanism arranged on the first input shaft; 
 a first input shaft first gear and a first input shaft second gear each arranged on the first input shaft in a non-torque resistant manner and corresponding to the first synchromesh mechanism; 
 a second input shaft arranged to sleeve the first input shaft, the first input shaft and the second input shaft being rotatably independently of each other; 
 a second input shaft first gear and a second input shaft second gear each arranged on the second input shaft in a torque-resistant manner; 
 an intermediate shaft; 
 an output shaft; 
 an intermediate shaft first gear and an intermediate shaft second gear each arranged on the intermediate shaft in a torque-resistant manner, wherein the first input shaft first gear is always in a meshing state with the intermediate shaft first gear, and the intermediate shaft second gear always in a meshing state with the second input shaft second gear; 
 an output shaft first gear arranged on the output shaft in a torque-resistant manner, wherein the first input shaft second gear always in a meshing state with the output shaft first gear; 
 a second synchromesh mechanism arranged on the output shaft; and 
 an output shaft second gear and an output shaft third gear each arranged on the output shaft in a non-torque-resistant manner and each corresponding to the second synchromesh mechanism, wherein the output shaft second gear and the output shaft third gear are always in a meshing state, respectively, with the second input shaft first gear and the second input shaft second gear; 
 
 an electric motor, wherein the electric motor is always in transmission connection with the second input shaft; 
 a differential mechanism, wherein the differential mechanism is always in transmission connection with the output shaft; 
 a dual clutch including a first clutch unit selectively engageable with the first input shaft and a second clutch unit selectively engageable with the second input shaft; and 
 an engine, the engine being selectively in transmission connection with the differential mechanism via one of the first clutch unit and the second clutch unit. 
 
     
     
       12. The hybrid system according to  claim 11 , wherein the engine is selectively in transmission connection with the electric motor via the second clutch unit. 
     
     
       13. The hybrid system according to  claim 11 , wherein one of:
 a rotor of the electric motor is directly connected with the second input shaft in a coaxial manner; and 
 the electric motor is always in transmission connection with the second input shaft via one of the second input shaft first gear and the second input shaft second gear. 
 
     
     
       14. The hybrid system according to  claim 13 , wherein one of:
 the rotor of the electric motor is directly connected with the intermediate shaft in a coaxial manner; and 
 the electric motor is always in transmission connection with the second input shaft via one of:
 a first gear pair consisting of the output shaft second gear and the second input shaft first gear, 
 a second gear pair consisting of the output shaft third gear and the second input shaft second gear, and 
 a third gear pairing consisting of an additional intermediate gear and the second input shaft first gear. 
 
 
     
     
       15. The hybrid system according to  claim 11 , wherein the hybrid system is operable in one of a pure electric motor driving mode, a pure engine driving mode, and a hybrid driving mode, wherein:
 in the pure electric motor driving mode, the engine is in a non-operating state, the electric motor is in an operating state, the first clutch unit and the second clutch unit are both disengaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the electric motor transmits torque to the differential mechanism for driving; 
 in the pure engine driving mode, the engine is in an operating state, the electric motor is in a non-operating state, one of the first clutch unit and the second clutch unit is engaged, and at least one of a) the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and b) the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the engine transmits torque to the differential mechanism for driving; and 
 in the hybrid driving mode, the engine and the electric motor are both in an operating state, one of the first clutch unit and the second clutch unit is engaged, at least one of a) the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and b) the second synchromesh mechanism is engaged with one of a gear corresponding to the output shaft second gear and the output shaft third gear, such that the engine and the electric motor transmit torque to the differential mechanism for driving. 
 
     
     
       16. The hybrid system according to  claim 15 , wherein, when the hybrid system is in the pure engine driving mode, one of:
 the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with the first input shaft first gear, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear; 
 the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with the first input shaft second gear, and the second synchromesh mechanism is in a neutral state; and 
 the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear. 
 
     
     
       17. The hybrid system according to  claim 15 , wherein, when the hybrid system is in the hybrid driving mode, one of:
 the first clutch unit is engaged and the second clutch unit is disengaged, the first synchromesh mechanism is engaged with one of the first input shaft first gear and the first input shaft second gear, and the second synchromesh mechanism is engaged with one of the output shaft second gear or the output shaft third gear; and 
 the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear. 
 
     
     
       18. The hybrid system according to  claim 15 , wherein the hybrid system is operable in an idle charge mode, in which the engine and the electric motor are both in an operating state, the first clutch unit is disengaged and the second clutch unit is engaged, both the first synchromesh mechanism and the second synchromesh mechanism are in a neutral state, such that the engine transmits torque to the electric motor to enable the electric motor to charge a battery. 
     
     
       19. The hybrid system according to  claim 15 , wherein the hybrid system is operable in a mode of starting the engine while driving in which the electric motor is in an operating state, the first clutch unit is disengaged and the second clutch unit is engaged, the first synchromesh mechanism is in a neutral state, and the second synchromesh mechanism is engaged with one of the output shaft second gear and the output shaft third gear, such that the electric motor transmits torque to the differential mechanism while transmitting torque to the engine for starting the engine. 
     
     
       20. A vehicle, comprising the hybrid system according to  claim 11 .